PROJECTION DEVICE WITH COLOR WHEEL LOCKING FUNCTION AND METHOD USING THE SAME

摘要

A projection device with a color wheel locking function is provided. The projection device includes a light source, a first color wheel unit, a first spindle motor, a magnetic locking mechanism and a control unit. The light source generates a light beam. The first color wheel unit has at least one transparent region through which the light beam transmits. The first spindle motor is to be enabled to rotate the first color wheel unit, and disabled to stop rotating in correspondence with an external magnetic force. The magnetic locking mechanism abuts upon the first spindle motor and generates the external magnetic force. The control unit controls the magnetic locking mechanism. When the first spindle motor stops in correspondence with the external magnetic force, a position of the at least one transparent region corresponds to the light source so that the light beam transmits through the transparent region.

主权项

1. A projection device with a color wheel locking function, the projection device comprising:
a light source generating a light beam; a first color wheel unit having at least one transparent region through which the light beam transmits; a first spindle motor to be enabled to rotate the first color wheel unit, and disabled to stop rotating in correspondence with an external magnetic force; a magnetic locking mechanism abutting upon the first spindle motor and generating the external magnetic force; and a control unit controlling the magnetic locking mechanism; wherein when the first spindle motor stops in correspondence with the external magnetic force, a position of the at least one transparent region corresponds to the light source so that the light beam transmits through the at least one transparent region.